Mining for Closure: Policies, practises and guidelines for sustainable mining and closure of mines
Box 8 Drainage tunnel mushroom farms
Case example
Tunnel Closure – Diamond Mushroom Farms
Market opportunity
Tunnels stable environment and climate provides competitive advantage for mushroom grower
Capital expenditure
ZAR 600 000
Longevity
Ongoing
Infrastructure
Underground drainage tunnels in historical mining area around the “Big Hole” of Kimberley
Employment
12 persons
Market
Leading supplier of specialty mushrooms with southern African distribution network. Turnover ZAR 800 000/p.a.
Additional benefit
Underground drainage tunnels an ongoing maintenance liability for De Beers. This was turned into rental income.
Fate
Project acquired by De Beers for use as an empowerment vehicle.
Box 9 Metallurgical plant fish farm
Case example
Metallurgical Plant Closure – AngloGoldFish (West Rand)
Market opportunity
Ponds ideal for managing water conditions for fish farming – such operations carried out by existing business actors
Capital expenditure
ZAR 2.5 million
Longevity
Ongoing.
Infrastructure
Metallurgical Plants designed for the circulation of liquids
Employment
18
Market
Outgrower to existing exporter. Turnover ZAR 3.6 million/p.a.
Additional benefit
If replicated at 4 earmarked sites closure savings could have exceeded ZAR 45 million and result in a world class player in the ornamental fish business.
Fate
Avoidance of closure cost in excess of ZAR 7 million
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MINING FOR CLOSURE
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